
public class string17 {

	public static void main(String[] args)throws Exception
	{
		int posNum = 2, strLen = 3;
		String str1 = "0123456789";
		StringBuilder strb = new StringBuilder(str1);
		str1 = strb.delete(posNum, posNum + strLen).toString();
		System.out.println(str1);
	}
}
